/*
* Copyright 2018 Shanxi Lu'an Taihang Laihui Net Tech co.,LTD.
*/
package com.laihuichuxing.observer;/**
 * Description:
 *
 * @author: Qinxuefeng
 * @since: 1.0
 * Create Date Time: 2018/12/26 16:45
 * Update Date Time:
 */

public abstract class Observer {
    abstract void update();
}
